LinkedIn has a solid security team today. That was probably not the case when this breach apparently happened, though. Just because the dump leaked today has SHA-1 hashes, doesn't mean that's what they're doing now.
I'm not invested in changing your opinion of LinkedIn. I'm not a fan either. I'm just clarifying that the team there now didn't have anything to do with what happened in (apparently) 2012, and I would not count on your assumptions of what they're doing with passwords as being valid anymore.